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Chemistry - Miscellaneous

Avatto > > NTSE > > Practice Questions Ntse > > Chemistry > > Miscellaneous

71. The general electronic configuration of the transition elements is (NTSE Bihar, Stage-I, 2016-17)

A
(n - 1 )d^1o (n + 1 )S²
B
(n - 1 )d^{1- 10} (n + 1)s ^1-2
C
(n - 1) d^1-10np⁶ns²
D
(n - 1 )d^1-10ns^0-2

Answer
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Option : D
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72. Which of the following is the strongest acid? (NTSE Bihar, Stage-I, 2016-17)

A
F ₂CHCOOH
B
CICH₂COOH
C
FCH₂COOH
D
CI₂CHCOOH

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Option : A
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73. Nitrobenzene can be prepared by heating benzene
with a mixture, concentrated HN0₃ and
concentrated H₂S0₄, In this nitrating mixture,
HN03 acts as (NTSE Bihar, Stage-I, 2016-17)

A
Abase
B
An acid
C
A catalyst
D
A reducing agent

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Option : A
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74. In the equation
CaC0₃ + 2HCI → CaCI₂ + H₂0 + CO₂

the volume of CO₂ gas formed when 2.5 gm CaC0₃are completely dissolved in excess of hydrochloric acid at O°C and 1 atm pressure is (NTSE Odisha, Stage-I, 2015-16)

A
0.28 L
B
0.56 L
C
1.12 L
D
5.6 L

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Option : B
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75. What is the amount of water produced by the complete combustion of 16 g of methane? (NTSE Odisha, Stage-I, 2015-16)

A
16 g
B
18 g
C
32 g
D
36 g

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Option : D
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